diff --git a/mne/time_frequency/csd.py b/mne/time_frequency/csd.py
index b7ac394ffc9..94ba920fba6 100644
--- a/mne/time_frequency/csd.py
+++ b/mne/time_frequency/csd.py
@@ -1140,6 +1140,7 @@ def csd_array_morlet(X, sfreq, frequencies, t0=0, tmin=None, tmax=None,
     csd_tstart = None if tmin is None else np.searchsorted(times, tmin - 1e-10)
     csd_tstop = None if tmax is None else np.searchsorted(times, tmax + 1e-10)
     csd_tslice = slice(csd_tstart, csd_tstop)
+    times = times[csd_tslice]
 
     # Compute the CSD
     return _execute_csd_function(X, times, frequencies, _csd_morlet,
diff --git a/mne/time_frequency/tests/test_csd.py b/mne/time_frequency/tests/test_csd.py
index e444a8ac342..b6bbe25a6ee 100644
--- a/mne/time_frequency/tests/test_csd.py
+++ b/mne/time_frequency/tests/test_csd.py
@@ -412,6 +412,10 @@ def test_csd_fourier():
         else:
             csd = csd_fourier(epochs, fmin=9, fmax=23, tmin=tmin, tmax=tmax)
 
+        if tmin is None and tmax is None:
+            assert csd.tmin == 0 and csd.tmax == 9.98
+        else:
+            assert csd.tmin == tmin and csd.tmax == tmax
         csd = csd.mean([9.9, 14.9, 21.9], [10.1, 15.1, 22.1])
         _test_csd_matrix(csd)
 
@@ -457,6 +461,10 @@ def test_csd_multitaper():
         else:
             csd = csd_multitaper(epochs, adaptive=adaptive, fmin=9, fmax=23,
                                  tmin=tmin, tmax=tmax)
+        if tmin is None and tmax is None:
+            assert csd.tmin == 0 and csd.tmax == 9.98
+        else:
+            assert csd.tmin == tmin and csd.tmax == tmax
         csd = csd.mean([9.9, 14.9, 21.9], [10.1, 15.1, 22.1])
         _test_csd_matrix(csd)
 
@@ -510,6 +518,10 @@ def test_csd_morlet():
         else:
             csd = csd_morlet(epochs, frequencies=freqs, n_cycles=n_cycles,
                              tmin=tmin, tmax=tmax)
+        if tmin is None and tmax is None:
+            assert csd.tmin == 0 and csd.tmax == 9.98
+        else:
+            assert csd.tmin == tmin and csd.tmax == tmax
         _test_csd_matrix(csd)
 
     # CSD diagonals should contain PSD